CRM-OA

Certified Calibration Solution for Okadaic Acid

Okadaic acid (OA) is a toxin produced by marine dinoflagellates that is implicated in diarrhetic shellfish poisoning (DSP), a gastrointestinal syndrome caused by consumption of contaminated shellfish. The maximum permissible total level of DSPs (OA, DTX1, and DTX2) in shellfish is currently 0.16 mg OA equivalent/kg in whole tissue [1]. CRM-OA-d is a certified calibration solution of OA in methanol and isa replacement for CRM-OA-c, which was released in 2007.

Table 1: Certified concentration values for CRM-OA

Okadaic acid

CAS registry No.: 78111-17-8

Molecular formula: C 44 H 68 O 13

Molecular weight: 805.00 g/mol

[M+H] + : m/z 805.4733

[M-H] - : m/z 803.4587

Period of validity: 2 years from date of sale

Storage conditions: -12 °C or below

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